Weeks Marine, Inc.
Weeks Marine is a marine construction, dredging, and tunneling contractor founded in 1919 serving federal and state government agencies, port authorities, energy companies, and terminal operators across North America, the Pacific, and Central America, operating one of the largest privately-owned marine equipment fleets in the region.
- Company typePrivate
- Founded1919
- HeadquartersBourg, United States
- Headcount1,001–5,000
- GTM typeB2B
- OfferingServices
What Weeks Marine, Inc. does
Weeks Marine, Inc. is a U.S. marine construction, dredging, and tunneling contractor founded in 1919 and headquartered in Cranford, New Jersey. Since January 1, 2023, the company has operated as a wholly-owned but independently branded subsidiary of Kiewit Corporation, maintaining its century-old brand and three core operating subsidiaries: Healy Tibbitts Builders (Hawaii and Pacific marine construction, acquired 1989), McNally International (Canada/U.S. tunneling, acquired 2011), and North American Aggregates (tri-state aggregates supply). Service lines span marine construction (piers, wharves, bulkheads, bridges, immersed tube tunnels), capital and maintenance dredging for navigation channels and coastal restoration, marine services (chartering, heavy lift, salvage), and tunneling (Earth Pressure Balance, mechanized rock, drill and blast, and soft ground methods).
The company's technical platform is anchored by one of the largest privately-owned marine equipment fleets in North America — 32 cranes, 21 dredges, 12 tugboats, 385 barges, and 6 yards — including the flagship Tier IV trailing suction hopper dredges R.B. Weeks (delivered May 2023, the largest capital investment in company history) and Magdalen (delivered 2017), a 500-ton Weeks 533 floating crane (largest of its kind on the U.S. East Coast), seven cutter suction hydraulic dredges, electric E-Cranes, and electric boosters deployed in marsh creation projects since 2015. Specialized EPB tunneling expertise is delivered through McNally, which has completed over 800 kilometers of tunnels.
Revenue is generated exclusively through B2B project-based contracts won via competitive bidding on federal, state, and local government tenders (U.S. Army Corps of Engineers, Naval Facilities Engineering Command, Louisiana CPRA, Port Authorities of Houston and Georgia) and direct private sector engagement with energy companies, terminal operators, and developers. Distribution channels include direct government contracting, direct private sector engagement, and joint-venture partnerships (e.g., SKW with Skanska and Kiewit; Manson Construction for Block Island Wind). The company does not disclose pricing publicly and operates with no consumer-facing product surface.
Weeks Marine, Inc. firmographics
Firmographics- Name
- Weeks Marine, Inc.
- Legal name
- WEEKS MARINE, INC.
- Website
- https://weeksmarine.com
- Company type
- Private
- Founded year
- 1919
- Operating status
- Operating
- Headcount range
- 1,001–5,000 employees
- Short description
- Weeks Marine is a marine construction, dredging, and tunneling contractor founded in 1919 serving federal and state government agencies, port authorities, energy companies, and terminal operators across North America, the Pacific, and Central America, operating one of the largest privately-owned marine equipment fleets in the region.
- Ownership category
- akta.pro rank
Weeks Marine, Inc. industry classification
Industry- Product category
- Marine Construction & Dredging Services
- NAICS
- Marine Cargo Handling (48832), Building Equipment Contractors (2382)
- SIC
- Heavy Construction Other Than Bldg Const - Contractors (1600), Construction - Special Trade Contractors (1700), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)
- akta.pro primary industry
- Marine Terminals & Cargo Handling Infrastructure (RoRo, Bulk, Container) (IMAFAJAF)
- akta.pro secondary industries
- Subsea & Nearshore Civil Works (Trenching, Rock Placement, Mattressing) (IMAFAJAI), Marine Piling & Deep Foundations (Jetties, Dolphins, Moorings) (IMAFAJAE), Port Rehabilitation, Maintenance & Asset Renewal (Repairs, Strengthening) (IMAFAJAL)
Keywords
Where Weeks Marine, Inc. is headquartered
LocationHeadquarters
- HQ city
- Bourg
- HQ country
- United States
- HQ region
- North America
Offices8 records
Markets served
Weeks Marine, Inc. business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Operations, Infrastructure, Personnel, Supply Chain, Technology or R&D, Marketing or Sales
Revenue model
- Marine Construction Projects: Weeks Marine generates revenue through large-scale marine construction projects for government and private sector clients. Projects include piers, wharves, bulkheads, offshore structures, tunnels, and coastal protection infrastructure. Revenue is project-based, typically won through competitive bidding on government tenders and private contracts.
- Dredging Services: Capital and maintenance dredging services for navigation channels, port deepening, and coastal restoration. Both government contracts (U.S. Army Corps of Engineers, Port Authorities) and state agency work (Coastal Protection and Restoration Authority). Project-based contracts with significant contract values.
- Equipment Chartering and Marine Services: Charter fleet of over 85 barges available for short or long-term bareboat/time charters. Heavy lift services, towing, and salvage operations. Marine services supporting both internal projects and external client needs.
Go-to-market motion1 record
Distribution channels3 records
Marketing channels7 records
Weeks Marine, Inc. product offering
Product offeringCore offering
Weeks Marine is a marine construction, dredging, and tunneling contractor that delivers turnkey heavy-civil marine infrastructure projects for government agencies and private-sector clients. Its work spans waterfront structures (piers, wharves, bulkheads, bridges), capital and maintenance dredging for ports and navigation channels, coastal protection and marsh creation, heavy marine lifts, equipment chartering, and tunnel construction through its McNally subsidiary. The company operates one of the largest marine equipment fleets in North America and self-performs projects end-to-end.
Product overview
Weeks Marine is a marine construction, dredging, and tunneling company operating as a wholly-owned subsidiary of Kiewit Corporation since January 2023. The company provides turnkey solutions through five core service areas: Marine Construction (building waterfront infrastructure, bridges, specialty projects), Dredging (capital/maintenance dredging, coastal restoration), Marine Services (chartering, heavy lift, salvage), and Tunneling (led by McNally subsidiary). Key subsidiaries include Healy Tibbitts Builders (Hawaii/Pacific marine construction) and McNally International (tunneling in Canada/US). The company operates a substantial owned equipment fleet including trailing suction hopper dredges R.B. Weeks and Magdalen, cutter suction dredges, floating cranes (90-500 ton), and over 385 barges. Services span waterway infrastructure, coastal protection, and environmental remediation.
Differentiator
Problem solved
Functional benefit
Products and services
- Marine Construction Marine construction services including waterfront infrastructure building, bulkheads, berthing structures, piers, wharves, bridges, immersed tube tunnels, and specialty projects. Serves energy, transportation, heavy civil infrastructure, environmental remediation, and coastal resiliency markets.
- Dredging Turnkey dredging services including capital and maintenance dredging for deep and shallow draft navigation, and coastal restoration. Operates trailing suction hopper dredges (TSHD) and cutter suction hydraulic dredges. Works with U.S. Army Corps of Engineers and Port Authorities on projects such as the SHEP Inner Harbor Dredging (10.5M cubic yards) and Houston Ship Channel Expansion.
- Marine Services Marine services including chartering of barges and tugboats, heavy lift and salvage operations, and fleet management. Owns one of the largest fleets of floating equipment in North America with over 85 barges available for short or long-term bareboat or time charters, supporting both internal projects and external clients.
- Tunneling Tunneling services led by subsidiary McNally International. Capabilities include Earth Pressure Balance (EPB) tunneling, mechanized rock tunneling, drill and blast tunneling, and conventional soft ground tunneling. Constructs tunnels for water, wastewater, and transit infrastructure projects such as the Northeast Ohio Regional Sewer District's Project Clean Lake.
- Equipment Fleet Chartering Charter fleet including floating cranes (90 to 500 ton capacity, including the Weeks 533 - the largest fully revolving floating crane on the U.S. East Coast), trailing suction hopper dredges, cutter suction dredges, E-cranes (fully electric hydraulic cranes), tugboats, and barges available for project deployment or charter to external clients.
- Healy Tibbitts Builders, Inc. (Subsidiary Operations) Wholly owned subsidiary since 1989, operating in Hawaii and the Pacific region. Specializes in marine construction, pile-driving, deep-shoring systems, pier and wharf construction, submarine pipeline and cable installation, dredging, and marine heavy lifts.
- McNally International, Inc. (Subsidiary Operations) Wholly owned subsidiary since 2011, operating in Canada and the United States. Civil contractor specializing in tunnel and marine construction, with over 800 kilometers of tunnels completed using Earth Pressure Balance, mechanized rock tunneling, drill and blast, and conventional soft ground methods.
- North American Aggregates (Subsidiary Operations) Wholly owned subsidiary supplying aggregates for construction, infrastructure, transportation, and redevelopment in the New York, New Jersey, and Connecticut tri-state area. Operates sustainable aggregate delivery using barge and tugboat transport to reduce truck traffic and emissions.
Quantifiable outcome
- Over 250,000 hours without a recordable or lost time incident aboard hopper dredge Magdalen
- +3 more outcomes
Companies that use Weeks Marine, Inc.
Customer profileNamed customers12 records
Segments4 records
Ideal customer profiles3 records
Weeks Marine, Inc. technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
Weeks Marine, Inc. partnerships and signals
Strategic signalScale indicators10 records
Recent moves7 records
Expansion highlights5 records
Weeks Marine, Inc. competitors and assessment
Company assessmentDirect peers
- Orion Marine Group: U.S.-based marine construction contractor providing similar marine construction, dredging, and specialty services to government and private clients. Directly competes with Weeks Marine for federal navigation and port deepening contracts.
- Great Lakes Dredging & Dock Corporation: Largest provider of dredging services in the United States, operating a fleet of hopper dredges and specializing in coastal protection, navigation, and land reclamation. Direct competitor in the U.S. dredging market.
- Manson Construction Co. Family-owned marine construction and dredging contractor operating on U.S. coasts. Joint ventured with Weeks Marine on Block Island offshore wind; competes for similar federal and port authority work.
- Cashman Dredging & Marine: Marine construction, heavy lift, and dredging contractor serving U.S. East Coast clients. Overlaps with Weeks Marine in port construction, marine pipeline installation, and dredging services.
- Dutra Group: Marine construction and dredging company operating on the U.S. West Coast. Comparable in scope to Weeks Marine for harbor deepening, levee construction, and aggregate barge transport.
Broad incumbents
- Kiewit Corporation: Parent company of Weeks Marine and one of the largest construction and engineering organizations in North America. Operates broadly across heavy civil, building, industrial, and mining—not a direct competitor but the controlling entity providing capital and project pipelines.
- Skanska: Global construction and development firm with U.S. heavy civil operations. Joint ventured with Weeks Marine and Kiewit on Midtown Tunnel (Elizabeth River Constructors); competes for major tunnel and infrastructure megaprojects.
- Granite Construction: Large diversified infrastructure contractor with U.S. heavy civil and marine construction operations. Competes with Weeks Marine on port, water, and coastal infrastructure projects as a broader portfolio player.
Emerging players
- Traylor Construction Group: Heavy civil and underground construction firm specializing in tunnels, bridges, and marine foundations. Overlaps with Weeks Marine's McNally tunneling business and competes for water/wastewater tunnel contracts.
Others
- Bouchard Transportation Co. U.S. marine transportation and tug/barge operator. Comparable to Weeks Marine's marine services and equipment chartering business but operates primarily in liquid bulk transportation rather than construction.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Weeks Marine, Inc. social profiles
Digital presenceWeeks Marine, Inc. compliance and trust
Trust signalCompliance8 records
Weeks Marine, Inc. financial estimates
Financial estimateRevenue estimate
Valuation estimate
Weeks Marine, Inc. leadership team
Management profileNumber of profiles
Profiles14 records
Weeks Marine, Inc. subsidiaries and ownership
Company hierarchySubsidiaries4 records
Weeks Marine, Inc. funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Weeks Marine, Inc. M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Weeks Marine, Inc.
What does Weeks Marine, Inc. do?
Weeks Marine is a marine construction, dredging, and tunneling contractor that delivers turnkey heavy-civil marine infrastructure projects for government agencies and private-sector clients. Its work spans waterfront structures (piers, wharves, bulkheads, bridges), capital and maintenance dredging for ports and navigation channels, coastal protection and marsh creation, heavy marine lifts, equipment chartering, and tunnel construction through its McNally subsidiary. The company operates one of the largest marine equipment fleets in North America and self-performs projects end-to-end.
Is Weeks Marine, Inc. a public or private company?
Weeks Marine, Inc. is a private company. It is classified as corporate owned and is currently operating.
When was Weeks Marine, Inc. founded?
Weeks Marine, Inc. was founded in 1919. It employs 1,001 to 5,000 people.
Where is Weeks Marine, Inc. based?
Weeks Marine, Inc. is headquartered in Bourg, United States, in the North America region.
How does Weeks Marine, Inc. make money?
Three revenue lines are on record. Marine Construction Projects are the primary driver. The others are dredging Services and equipment Chartering and Marine Services.
Who are Weeks Marine, Inc.'s main competitors?
Direct peers on record are Orion Marine Group, Great Lakes Dredging & Dock Corporation, Manson Construction Co., Cashman Dredging & Marine and Dutra Group. Broad incumbents are Kiewit Corporation, Skanska and Granite Construction. Traylor Construction Group is listed as an emerging player. Bouchard Transportation Co. is listed as an others.
Does Weeks Marine, Inc. have an API?
No public API is recorded for Weeks Marine, Inc..
What industry is Weeks Marine, Inc. in?
Weeks Marine, Inc.'s product category is Marine Construction & Dredging Services. Its primary akta.pro industry code is IMAFAJAF, Marine Terminals & Cargo Handling Infrastructure (RoRo, Bulk, Container), with a secondary code of IMAFAJAI, Subsea & Nearshore Civil Works (Trenching, Rock Placement, Mattressing). Its NAICS code is 48832 and its SIC code is 1600.